macOS how to shoe thumbnail in cocoa application?

[mkristain]

hi i want to show thumbnail of images in my cocoa application can u please help me to do this.

When i have a image path i show it in IKImageBrowserView using

MyImageObject *item;
    
    NSString *filename = [path lastPathComponent];
	
	/* skip '.*' */ 
	if([filename length] > 0){
		char *ch = (char*) [filename UTF8String];
		
		if(ch)
			if(ch[0] == '.')
				return;
	}
	
	item = [[MyImageObject alloc] init];	
	[item setPath:path];
	[images addObject:item];
	[item release];
	
	[imageBrowser reloadData];

//but its gives this --ImageKit Error: reloadData called in non main thread

i also want to display thumbnail without having path directly from image stream.

like in visual studio i can read whole image file as stream and with this stream display the thumbnail.

is there any method to do this?

thanks.